class_docstr: Base class = common interface for retrieving the most similar terms for a given term.
  
  See Also
  --------
  :class:`~gensim.similarities.termsim.SparseTermSimilarityMatrix`
      A sparse term similarity matrix built using a term similarity index.
code: def __str__(self):
      members = ", ".join("%s=%s" % pair for pair in vars(self).items())
      return "%s<%s>" % (self.__class__.__name__, members)
  
imports: from array import array
  from itertools import chain
  import logging
  from math import sqrt
  import numpy
  from scipy import sparse
  from gensim.matutils import corpus2csc
  from gensim.utils import SaveLoad, is_corpus
label_desc: Use image node_id 2 for calling the TermSimilarityIndex obj's underlying member method code with example usage: obj.__str__() and returns: unknown